Shade device for vehicle

Abstract

A shade device for a vehicle includes: a shade; a retracting mechanism attached to a base end of the shade and retracting the shade in a stored state; a stay attached to a tip end of the shade; an extractable constant force spring; a rod, its tip end portion being attached to the stay and its base end portion being connected to the constant force spring, biased in a deploying direction of the shade by biasing force of the constant force spring, and transmitting the biasing force to the stay; a guide rail that stores the rod and an extracted portion of the constant force spring in the stored state of the shade, and guides the rod when the shade shifts from the stored state to the deploying state; and a locking mechanism that locks movement of the rod in the stored state of the shade.

What is claimed is: 
     
       1. A shade device for a vehicle, comprising:
 a shade deployed to shade a window of the vehicle in a deploying state, and stored in a stored state; 
 a retracting mechanism attached to a base end of the shade and retracting the shade in the stored state; 
 a stay attached to a tip end of the shade; 
 a constant force spring that generates biasing force by its extraction; 
 a rod, its tip end portion being attached to the stay and its base end portion being connected to a tip portion of an extracted portion of the constant force spring, biased in a deploying direction of the shade by biasing force of the constant force spring, and transmitting the biasing force to the stay; 
 a guide rail that is a member having a tube shape to store the rod and the extracted portion of the constant force spring in the stored state of the shade, and guides the rod when the shade shifts from the stored state to the deploying state; and 
 a locking mechanism that locks the rod in the stored state of the shade, 
 wherein the extracted portion of the constant force spring is in an S shape within the guide rail to press the rod toward an inner surface of the guide rail in the stored state of the shade. 
 
     
     
       2. The shade device for a vehicle according to  claim 1 , wherein
 the constant force spring is wound in a coil shape around a supporting member in the deploying state, 
 the rod is facing an outer surface of the portion of the constant force spring within the guide rail, the outer surface of the constant force spring being a surface facing an outer circumferential side in a state where the constant force spring is wound in the coil shape, and 
 the constant force spring at the portion extracted within the guide rail includes a portion contacting the rod while waved in an arch shape bowed toward the rod and a portion connected to the base end portion of the rod while waved toward the rod to form an S shape within the guide rail in the stored state of shade. 
 
     
     
       3. A shade device for a vehicle, comprising:
 a shade deployed to shade a window of the vehicle in a deploying state, and stored in a stored state, the shade being retractable to a stored state; 
 a stay attached to a tip end of the shade; 
 a constant force spring that generates biasing force; 
 a rod, its tip end portion being attached to the stay and its base end portion being connected to a tip portion of an extracted portion of the constant force spring, biased in a deploying direction of the shade by biasing force of the constant force spring, and transmitting the biasing force to the stay; and 
 a guide rail that is a member having a tube shape to store the rod and the extracted portion of the constant force spring in the stored state of the shade, and guides the rod when the shade shifts from the stored state to the deploying state; 
 wherein the extracted portion of the constant force spring is in an S shape within the guide rail to press the rod toward an inner surface of the guide rail in the stored state of the shade.